Vol. 11, Special Issue 10 (2022)

Author(s):
Rajat Khandelwal and Ashwani kumar

Abstract:
The field experiment on Efficacy of Cypermethrin and some biopesticides against mustard aphid [Lipaphis erysimi (Kalt.)] was conducted during Rabi 2021-2022, at Central Research Field, Department of Entomology, SHUATS, Naini, Prayagraj, UP. The relative evaluation of different insecticides viz., Nisco sixer Plus (T₁), Neem oil (T₂), Spinosad 45% SC (T₃), Metarhizium anisopliae (T₄), Cypermethrin (T5), Cypermethrin + Neem oil (T₆), Cypermethrin + Nisco Sixer Plus (T₇) and untreated control (T₀) was evaluated against mustard aphid (Lipaphis erysimi). Results revealed that, among the different treatments, the highest per cent population reduction of mustard aphid was recorded in Cypermethrin + Nisco Sixer Plus (83.22%) followed by Spinosad 45% SC (80.11%), Cypermethrin + Neem oil (78.37%). It is followed by Nisco Sixer Plus (74.83%) and Cypermethrin 10% EC (76.25%), Metarhizium anisopliae (74.08%) and Neem oil (71.60%) was the least effective among all treatments. While, the highest yield 28.123 q/ha was obtained from the treatment Cypermethrin + Nisco Sixer Plus as well as B: C ratio 1: 2.94 was obtained high from this treatment. It was followed by Spinosad 45% SC (1: 2.61), Cypermethrin + Neem oil (1: 2.16), Nisco Sixer Plus (1:1.98), Cypermethrin 10% EC (1: 1.66), Metarhizium anisopliae (1: 1.23), Neem oil (1: 1.18), as compared to Control (1: 0.97).